润滑相尺寸对镍-石墨可磨耗封严涂层性能的影响
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摘要
采用普通大气等离子喷涂(atmospheric plasma spraying,APS)和高能效超音速等离子喷涂(supersonic atmospheric plasma spraying,SAPS)分别沉积制备镍石墨可磨耗封严涂层,对比研究润滑相尺寸对涂层的力学性能、抗腐蚀性能以及抗冲蚀磨损性能的影响。结果表明:相较于APS涂层,SAPS沉积制备的涂层中石墨润滑相尺寸较小;SAPS涂层的结合强度(22.3±1.4)MPa和表面洛氏硬度(87±0.8)HR15Y比APS涂层分别高出22.5%和20.8%;APS涂层在30°攻角和90°攻角的相对冲蚀速率分别比SAPS涂层高出7%和13%,表明SAPS涂层抗冲蚀性能优于APS涂层;APS涂层和SAPS涂层在250℃的高温醋酸环境中均发生了明显的电化学腐蚀现象,但SAPS涂层的抗腐蚀性能优于APS涂层。
Ni-graphite abradable seal coatings were deposited by conventional atmospheric plasma spraying system(APS) and high efficiency supersonic atmospheric plasma spraying system(SAPS) respectively.The influence of the size of lubrication phase on mechanical properties,corrosion resistance and erosion resistance of the Ni-graphite coatings was investigated.The results indicate that the graphite phase in the SAPS coating has a smaller size than the APS coating.The bonding strength(21.0 ± 1.4) MPa and surface hardness(92 ± 1) HR15 Y of SAPS coating are 29.6 % and 23.5 % higher than those of APS coating respectively.The relative erosion rates of APS coating at 30° and 90° angle of attack are 7 % and 13% higher than those of SAPS coating respectively,indicating that SAPS coating has a better erosion resistance than APS coating.Both APS coating and SAPS coating exhibit an obvious electrochemical corrosion in acetic acid environment at 250 ℃.However,the corrosion resistance of SAPS coating is better than that of APS coating.
Ni-graphite abradable seal coatings were deposited by conventional atmospheric plasma spraying system(APS) and high efficiency supersonic atmospheric plasma spraying system(SAPS) respectively.The influence of the size of lubrication phase on mechanical properties,corrosion resistance and erosion resistance of the Ni-graphite coatings was investigated.The results indicate that the graphite phase in the SAPS coating has a smaller size than the APS coating.The bonding strength(21.0 ± 1.4) MPa and surface hardness(92 ± 1) HR15 Y of SAPS coating are 29.6 % and 23.5 % higher than those of APS coating respectively.The relative erosion rates of APS coating at 30° and 90° angle of attack are 7 % and 13% higher than those of SAPS coating respectively,indicating that SAPS coating has a better erosion resistance than APS coating.Both APS coating and SAPS coating exhibit an obvious electrochemical corrosion in acetic acid environment at 250 ℃.However,the corrosion resistance of SAPS coating is better than that of APS coating.
引文
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[2]于方丽,白宇,吴秀英,等.等离子喷涂镍基可磨耗封严涂层抗腐蚀及耐磨性能分析[J].无机材料学报,2016,31(7):687-693.(YU F L,BAI Y,WU X Y,et al.Corrosion resistance and anti-wear property of nickel based abradable sealing coating deposited by plasma spraying[J].J Inorg Mater,2016,31(7):687-693.)
[3]BERTHOUL B,BATAILLY A,STAINIER L,et al.Phenomenological modeling of abradable wear in turbomachines[J].Mech Syst Signal PR,2018,98:770-785.
[4]吴秀英,韩志海,赵玉良,等.超音速等离子喷涂沉积可磨耗封严涂层研究[J].重型机械,2012,5:45-49.(WU X Y,HAN Z H,ZHAO Y L,et al.Study of abradable seal coatings deposited by supersonic atmospheric plasma spraying[J].Heavy Machin,2012,5:45-49.)
[5]许存官,杜令忠,张伟刚,等.Ni/石墨封严涂层的盐雾腐蚀研究[J].航空材料学报,2010,30(4):53-58.(XU C G,DU L Z,ZHANG W G,et al.Salt spray corrosion of Ni/graphite abradable sealing coatings[J].J Aeronaut Mater,2010,30(4):53-58.)
[6]王刚,腾佰秋,王志宏,等.航空发动机上可磨耗封严涂层的应用及需求[J].热喷涂技术,2012,4(1):20-23.(WANG G,TENG B Q,WANG Z H,et al.The development of abradable coatings for aeroengine[J].Therm Spray Techn,2012,4(1):20-23.)
[7]王跃明,时启龙.等温化学气相渗透法制备C/C-SiC复合材料的摩擦磨损性能[J].航空材料学报,2017,37(4):52-60.(WANG Y M,SHI Q L.Tribological property of C/C-SiC composites fabricated by isothermal chemical vapor infiltration[J].J Aeronaut Mater,2017,37(4):52-60.)
[8]钟爱文,姚萍屏,肖叶龙,等.空间摩擦学及其材料的研究进展[J].航空材料学报,2017,37(2):88-99.(ZHONG A W,YAO P P,XIAO Y L,et al.Research status and developing trend of space tribology and tribological materials[J].J Aeronaut Mater,2017,37(2):88-99.)
[9]RAJENDRAN R.Gas turbine coatings-an overview[J].Eng Fail Anal,2012,26:355-369.
[10]HUANG C J,LI W Y,XIE Y C,et al.Effect of substrate type on deposition behavior and wear performance of Ni-coated graphite-Al composite coatings deposited by cold spraying[J].J Mater Sci Technol,2017,4:338-346.
[11]REZA S,MAHMOUD H S,MOHAMMAD A,et al.Effect of APS process parameters on high-temperature wear behavior of nickel-graphite abradable seal coatings[J].Surf Coat Technol,2017,321:403-408.
[12]于月光,侯伟骜,尹春雷,等.可磨耗封严涂层材料喷涂过程中石墨含量变化研究[J].热喷涂技术,2009,1(1):20-24.(YU Y G,HOU W A,YIN C L,et al.Graphite content change of powders for abradable seal coatings during flame or plasma process[J].Therm Spray Techn,2009,1(1):20-24.)
[13]王跃明,陈梦华,李月,等.W-Re合金构件气氛保护等离子喷涂成形技术[J].航空材料学报,2016,36(4):24-34.(WANG Y M,CHEN M H,LI Y,et al.Near-net-shape tungsten-rhenium alloy parts produced by shrouded plasma spray forming[J].J Aeronaut Mater,2016,36(4):24-34.)
[14]BAI Y,HAN Z H,LI H Q,et al.Structure-property differences between supersonic and conventional atmospheric plasma sprayed zirconia thermal barrier coatings[J].Surf Coat Tech,2011,205(13/14):3833-3839.
[15]BAI Y,LIU K,WEN Z H,et al.The influence of particle in-flight properties on the microstructure of coatings deposited by the supersonic atmospheric plasma spraying[J].Ceram Int,2013,39(7):8549-8553.
[16]ZHAO L,BAI Y,TANG J J,et al.Effect of particle in-flight behavior on the composition of thermal barrier coatings[J].Appl Surf Sci,2013,286:184-191.
[17]BAI Y,ZHAO L,LIU K,et al.Fine-lamellar structured thermal barrier coatings fabricated by high efficiency supersonic atmospheric plasma spraying[J].Vacuum,2014,99:119-123.
[18]TANG J J,BAI Y,WANG J W,et al.Preheating treatment of thermal barrier coatings by supersonic plasma jet[J].Mater.Lett.,2016,182:181-184.
[19]王海军,蔡江,韩志海.超音速等离子与HVOF喷涂WC-Co涂层的冲蚀磨损性能研究[J].材料工程,2005(4):50-54.(WANG H J,CAI J,HAN Z H.Study on erosion wear of WC-Co coatings prepared by supersonic plasma spray and HVOF spray[J].J Mater Eng,2005(4):50-54.)
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